To have webmail display dates and time in your local time zone
Login to your webmail account by entering mail.yourdomain.com.au into the address bar of your web browser
Click imp mail client
Login with your full email address and password.
Expand the Options link on the left of the page.
Click Global Options
Click Locale and Time
Click "Your Current Time Zone"
Select Australia/your location e.g Australia/Brisbane
Configure other options as required.
Click Save Options.